Phase structure of the Polyakov-quark-meson model

• Verfasst von: Schaefer, Bernd-Jochen [VerfasserIn]
• Verfasst von: Pawlowski, Jan M. [VerfasserIn]
• Verfasst von: Wambach, Jochen [VerfasserIn]
• Titel: Phase structure of the Polyakov-quark-meson model
• Verf.angabe: B.-J. Schaefer, J.M. Pawlowski, and J. Wambach
• Fussnoten: Gesehen am 06.12.2017
• Titel Quelle: Enthalten in: Physical review / D
• Jahr Quelle: 2007
• Band/Heft Quelle: 76(2007,7) Artikel-Nummer 074023, 11 Seiten
• ISSN Quelle: 1550-2368
• ISSN Quelle: 1089-4918
• DOI: doi:10.1103/PhysRevD.76.074023
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1566076528

Abstract

The relation between the deconfinement and chiral phase transition is explored in the framework of a Polyakov-loop-extended two-flavor quark-meson (PQM) model. In this model the Polyakov loop dynamics is represented by a background temporal gauge field which also couples to the quarks. As a novelty an explicit quark chemical potential and Nf-dependence in the Polyakov loop potential is proposed by using renormalization group arguments. The behavior of the Polyakov loop as well as the chiral condensate as function of temperature and quark chemical potential is obtained by minimizing the grand canonical thermodynamic potential of the system. The effect of the Polyakov loop dynamics on the chiral phase diagram and on several thermodynamic bulk quantities is presented.